Delta Airlines offers a lowest-fare guarantee. This guarantee allows you to cancel your current flight with Delta if you find an advertised lower price on a travel website, like Travelocity. If the difference is greater than $10, you can receive a refund of the difference from Delta, along with a $100 travel voucher for future use.
Delta offers both refundable and nonrefundable fares. Nonrefundable fares are not as flexible as refundable fares, but they are usually less expensive. They also usually require an advanced purchase.
Delta does not offer discounts for certain types of travelers, which can be found from other airlines. These groups include children, seniors, military, government employees and those traveling due to a death and for international adoption purposes.